[Federal Register Volume 76, Number 125 (Wednesday, June 29, 2011)]
[Notices]
[Pages 38213-38214]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-16273]


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NUCLEAR REGULATORY COMMISSION

[NRC-2010-0321]


Notice of Issuance of Regulatory Guide

AGENCY: Nuclear Regulatory Commission.

ACTION: Notice of Issuance and Availability of Revision 2 of Regulatory 
Guide 1.107, ``Qualification for Cement Grouting for Prestressing 
Tendons in Containment Structures.''

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FOR FURTHER INFORMATION CONTACT: Mekonen M. Bayssie, U.S. Nuclear 
Regulatory Commission, Washington, DC 20555-0001, telephone: 301-251-
7489 or e-mail [email protected].

SUPPLEMENTARY INFORMATION:

I. Introduction

    The U.S. Nuclear Regulatory Commission (NRC or Commission) is 
issuing a revision to an existing guide in the agency's ``Regulatory 
Guide'' series. This series was developed to describe and make 
available to the public information such as methods that are acceptable 
to the NRC staff for implementing specific parts of the agency's 
regulations, techniques that the staff uses in evaluating specific 
problems or postulated accidents, and data that the staff needs in its 
review of applications for permits and licenses.
    Revision 2 of Regulatory Guide (RG) 1.107 entitled, ``Qualification 
for Cement Grouting for Prestressing Tendons in Containment 
Structures,'' was issued with a temporary identification as Draft 
Regulatory Guide, DG-1196.
    This guide describes a method that the staff of the U.S. Nuclear 
Regulatory Commission considers acceptable for the use of Portland 
cement grout as the corrosion inhibitor for prestressing tendons in 
prestressed concrete containment structures. This guide also provides 
quality standards for using Portland Cement grout to protect 
prestressing steel from corrosion.
    The prestressing tendon system of a prestressed concrete 
containment structure is a principal strength element of the structure. 
The ability of the containment structure to withstand the events 
postulated to occur during the life of the structure depends on the 
functional reliability of the structure's principal strength elements. 
Thus, any significant deterioration of the prestressing elements caused 
by corrosion may present a potential risk to public safety. It is 
important that any system for inhibiting the corrosion of prestressing 
elements must possess a high degree of reliability in performing its 
intended function.

II. Further Information

    In October 2010, DG-1196 was published with a public comment period 
of 60 days from the issuance of the guide. The public comment period 
closed on December 11, 2010. Electronic copies of Regulatory Guide 
1.107, Revision 2 are available through the NRC's public Web site under 
``Regulatory Guides'' at http://www.nrc.gov/reading-rm/doc-collections/ 
and through the NRC's Agencywide Documents Access and Management System 
(ADAMS) at http://www.nrc.gov/reading-rm/adams.html, under Accession 
No. ML110550732. The Regulatory Analysis may be found in ADAMS under 
Accession No. ML110550743. Staff's responses to public comments on DG-
1196 are available under ML110590058.
    In addition, regulatory guides are available for inspection at the 
NRC's Public Document Room (PDR) located at Room O-1 F21, One White 
Flint North, 11555 Rockville Pike, Rockville, Maryland 20852-2738. The 
PDR's mailing address is USNRC PDR, Washington, DC 20555-0001. The PDR 
can also be reached by telephone at 301-415-4737 or 800-397-4209, by 
fax at 301-415-3548, and by e-mail to [email protected].
    Regulatory guides are not copyrighted, and NRC approval is not 
required to reproduce them.

    Dated at Rockville, Maryland, this 17th day of June, 2011.


[[Page 38214]]


    For the Nuclear Regulatory Commission.
Thomas H. Boyce,
 Chief, Regulatory Guide Development Branch, Division of Engineering, 
Office of Nuclear Regulatory Research.
[FR Doc. 2011-16273 Filed 6-28-11; 8:45 am]
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